Otostigmus multidens Haase, 1887

Lewis, John G. E., 2014, A review of the orientalis group of the Otostigmus subgenus Otostigmus Porat, 1876 (Chilopoda: Scolopendromorpha: Scolopendridae), Zootaxa 3889 (3), pp. 388-413 : 399-400

Otostigmus multidens Haase, 1887

(Figs 41–44)

Otostigmus multidens Haase, 1887 , 75. Celebes [Sulawesi].

Nec Otostignus ruficeps Pocock, 1890 , 247. India. (Incorrectly synonymised under O. multidens by Lewis, 1996, 828, Figs 20 –23).

Otostigmus latidens Pocock, 1894 , 313. Java.

Otostigma modiglianii Silvestri, 1895 , 715. Mentaway Island, Sumatra.

Otostigmus multidens: Kraepelin, 1903 , 121, Fig. 59 .

O. (O.) multidens: Attems, 1930 , 141, Fig. 172. Tawarin Island, New Guinea, [ Papua].

O. multidens: Attems, 1938 , 336. Vietnam.

O. multidens carens Attems, 1938 , 336. Syn. nov. Vietnam. (See below).

O. armatus Attems, 1953 , 146. Laos.

O. (O.) multidens: Lewis, 1982 , 392, Figs12–16 . Sarawak.

O. (O.) multidens: Lewis, 1984 , 36, Fig. 3.14. Sarawak.

O. (O.) multidens: Lewis, 1991 , 340, Figs 8–10. Krakatau.

O. multidens: Schileyko, 1992 , 8 (in table). Vietnam.

O. multidens multidens: Schileyko, 1995 , 71 (in key).

O. (O.) multidens: Lewis, 2001 , 19, Figs 34–36. Sumatra, Kalimantan. O. armatus: Lewis 2004 , 27, Figs 1 –7. Laos.

O. multidens multidens: Tran et al., 2013 , 225 (checklist). Vietnam.

Diagnosis. (Incorporating data for O. loriae ). Length up to 60 mm. (19) 21–22 (23, 24) antennal articles, the basal 2–2.5 glabrous. Each forcipular coxosternal tooth-plate with 6–10 teeth generally with an inner group of three main teeth an outer of two or three (Fig. 41). Tergites sometimes with low lateral ridges, with ( loriae ) or without spinules, with complete paramedian sutures from 5, 6 or 7 (8), marginate from 7–11 (14). Sternites with short anterior paramedian sutures. Sternite of ultimate leg-bearing segment trapezoidal. Coxopleural process of moderate length with two or three apical (two apical+one subapical), (0), 1, 2 (3) lateral spines. A tibial spur on legs 1–15, 16, 17, 18. Two tarsal spurs on legs 1–(14), 16, 17, 18, 19 (20), the rest to 20 with one. Ultimate leg prefemoral spines VL 3–4 (5), VM 2–4, M 0 (2) DM 0, 1, 2, CS 1. In total (6) 7–12 plus a corner spine.

Material examined and descriptions. BMNH. Otostigma latidens Pocock co-type 96.10.6.8. Buitenzorg [Bogor], Java. 58 mm. 21 antennal articles, the 2.33 basal glabrous. 6+6 coxosternal teeth (very worn). With complete paramedian sutures from 7, marginate from 11. Coxopleural process with two apical and one or two lateral spines. Legs 1-17 with two tarsal spurs (18–20 missing). Tibial spurs abnormally absent on 1–16 but present on 17. Ultimate leg prefemoral sapines VL 4, VM 2, DM 1, CS 1.

Ot. latidens . Nab River Borneo Hose 95.7.13.18 = O. multidens Haase. 44mm. Antennae damaged, the basal 2–2.25 articles glabrous. 7+6 coxosternal teeth. Tergites with complete paramedian sutures from T7, marginate from 11. Coxopleural process with three apical, no lateral spines. Legs 1–18 with one tibial spur, 1–17 with two tarsal spurs, 18–20 with one, ultimate leg without. Ultimate leg prefemoral spines VL 3, VM 2, DM 2, CS 1.

Otostigma latidens Pocock , [Mount] Salak [Java] R. Kirkpatrick. 91.4.30.4 (Java). = O. multidens Haase. 47 mm. Antennal articles 22, the basal 2.5 glabrous. 8+9 worn forcipular coxosternal teeth. With complete paramedian sutures from 7, marginate from 11. Coxopleural process with three apical, one or two lateral spines. Leg 1 missing, 2–18 with one tibial spur, 2–18 with two tarsal spurs, 19 and 20 with one. Ultimate legs missing.

O. multidens . Peat swamp forest nr. Kereng Benkiavi, Sungai Sabangan, Central Kalimantan, Indonesia, 09/08/ 94. P. Jenkins. Bucket trap. Two incomplete specimens. Antennal articles 22[d], the basal 2.2 glabrous. 7+7 and 6+6 forcipular coxosternal teeth. With complete paramedian sutures from T8 and 7, marginate from 7 and 9. Leg 1 with a femoral spur, legs 1–16 with a tibial spur, legs 1–18 with two, 19 with one, 20 without tarsal spurs. Ultimate legs missing.

SMNH. Otostigma orientale Porat Java, Salak 1000 m Juni 1897, Colleg Hj Möller Determ. Attems. 49 mm. Antennal articles 22, the basal 2.5 glabrous. 9+6 forcipular coxosternal teeth (Fig. 42). With complete paramedian sutures from 6, marginate from 9. Coxopleural process with three apical and one lateral spine. Legs 1–18 with one tibial and two tarsal spurs, leg19 with one tarsal spur, 20 and 21 without. Right ultimate leg (probably regenerated) with prefemoral spines VL 6, VM 2, 2, DM 2, CS 1 (Fig. 43), the left VL 3, VM 3, DM 1, CS 1 (Fig. 44).

ZSM. Otostigmus spinosus Porat. Java coll. Verhoeff. 59 mm. Antennal articles 21, the basal 2.25 glabrous. 8+8 forcipular coxosternal teeth. With complete paramedian sutures from T6, marginate from 10. Coxopleural process with two or three apical and one lateral spine. Legs to 15 with one tibial, to 16 with two tarsals, 17–20 with one tarsal, ultimate legs without tarsal spurs. NB no dorsodistal spine on prefemur of leg 20. Ultimate leg prefemoral spines VL 3, VM 3, DM 0, CS 1.

Remarks. Haase (1887) described O. multidens as having a single tibial spur on legs 1–7 rather than on 1–17, 18 or 19. This may represent geographical variation but is probably an error and has been excluded from the diagnosis. Attems (1938) described O. multidens from Vietnam with ultimate leg prefemur spines as VL 3 or 4, VM and M 7 without clear division. This is atypical, probably due to regeneration. Otostigmus multidens appears to be highly variable with respect to the number of forcipular coxosternal teeth and the number of ultimate prefemoral spines but, despite this, cannot be clearly subdivided into separate populations using morphological data.

Figures

FIGURES 12 – 20. Otostigmus brevilabiatus Holotype. 12. Antennal article 3 dorsal. 13. Distal articles of left second maxillary telopodite. 14. Pretarsus of right second maxillary telopodite. 15. Pretarsus of left second maxillary telopodite. 16 Forcipular coxosternal tooth-plates. 17. Right forcipular trochanteroprefemoral process. 18. Left forcipular trochanteroprefemoral process. 19. Right coxopleural process. 20. Prefemur left ultimate leg ventral. FIGURES 21 – 26. Otostigmus foveolatus Holotype. 21. Antennal articles 1 – 3 ventral. 22. Antennal article 3 dorsal. 23. Pretarsus of second maxillary telopodite. 24. Forcipular coxosternal tooth-plates and right forcipular trochanteroprefemoral process. 25. Right coxopleural process. 26. Ultimate leg prefemur. Scale bars = 0.5 mm except Figs 22 & 27 = 1.0 mm and Figs 15, 16, 20, 21 & 24 = 0.1 mm.

FIGURES 55 – 62. Otostigmus striolatus. Syntypes. 55. Forcipular coxosternal tooth-plates ZMB spm. 56. Tergite 13 ZMB spm. (detail shown on left side only). 57. Sternite 16 ZMB spm. (partly freehand). 58. Ultimate leg-bearing segment ZMB spm. (detail of pores shown in posterior part of right coxopleuron). 59. Right coxopleural process ZSM spm. 60. Left coxopleural process ZSM spm. 61. Detached ultimate leg ZSM spm. 62. Second detached ultimate leg ZSM spm. FIGURES 63 – 67. Otostigmus sucki Syntypes. 63. Antennal article 3 dorsal spm. 2. 64. Right forcipular trochanteroprefemoral process and coxosternal tooth-plates spm. 3. 65. Ultimate tergite spm. 3. 66. Sternite of ultimate leg-bearing segment and left coxopleural process spm. 3. 67. Right prefemur ultimate leg spm 3 ventral. Scale bars = 1.0 mm except Figs 55, 58, 63 & 64 = 0.5 mm and Figs 59 & 60 = 0.1 mm.

FIGURES 1 – 4. Otostigmus ateles Holotype. 1. Antennal articles 1 – 3 dorsal. 2. Forcipular coxosternal tooth-plates. 3. Sternite 17. 4. Ultimate segments ventral. FIGURES 5 – 11. Otostigmus australianus 5. Sternite 12 Lectotype. 6. Sternite of ultimate leg-bearing segment spm. 2 Belenden Ker (after Lewis, 2003). 7. Sternite of ultimate leg-bearing segment spm. 3 Belenden Ker (after Lewis, 2003). 8. Right forcipular trochanteroprefemoral process and tooth-plates spm. 7 Malanda. 9. Sternite 6 spm. 7 Malanda. 10. Sternite 12 spm. 7 Malanda after (Lewis, 2003). 11. Ultimate segments ventral spm. 7 Malanda. Scale bars = 1.0 mm except Figs 1 & 2 = 0.5 mm.